Polymeric vehicles which include a polyol, a phenolic ester alcohol and isocyanate compound

a technology of polyols and isocyanates, applied in the field of polymeric vehicles, can solve the problems of petrochemical shortages and the use of organic solvents in large quantities, and achieve the effects of improving film properties, reducing vocs, and improving hardness and flexibility

Inactive Publication Date: 2000-07-11
EXXON CHEM PAT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The blend of the phenolic ester alcohol, polyol and isocyanate compound provides the polymeric vehicle with improved coating properties such as hardness, flexibility, hydrolytic stability, solvent resistance, corrosion resistance, weatherability, acid resistance and gloss. The polymeric vehicle and formulated coating compositions which include the polymeric vehicle of the invention may include organic solvents, water, or may not require water or organic solvents to provide a formulated coating composition with a viscosity such that the formulated coating composition may be applied by existing application equipment. When the phenolic ester alcohol, polyol and isocyanate compound are at low molecular weights, such as when the phenolic ester alcohol has a number average molecular weight in the range of from about 110 to about 1,000, the blend of the phenolic ester alcohol and isocyanate not only improves film properties

Problems solved by technology

Use of solvents, however, raises at least two problems.
First, in the past and potentially in the future, petrochemical shortages mitigate against the use of organic solvent in great volumes.
It has been a continuing challenge to provide coating compositions which upon thermosetting provide films with desired film properties such as hardness, flexibility,

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example ii

a. Ingredients

BYK.RTM.301 & 302-Flow control agent from Byk-Chemie.

Desmodur N3300-From Miles Corporation is a cyclo-trimer of 1,6-hexamethylene diisocyanate (isocyanurate of 1,6-hexamethylene diisocyanate, HDI). Its viscosity is 1.8-4 mPa.s at 25.degree. C., and its equivalent weight is 194.

DNNDSA-Catalyst Dinonyl naphthalene disulfonic acid in isobutanol is obtained from King Industries ("Nacure-155").

Cymel 300-An HMMM resin sold by Cytec Chemical Company having the formula: ##STR21## The latter HMMM resin appears to be a waxy solid under most conditions with a melting point in the range of about 30.degree. C.

DBTL-Dibutyltin dilaurate catalyst

b. Coatings

An oligoester diol was made from 1,4-butanediol and a 50 / 50 (mol / mol) mixture of dimethyl glutarate and dimethyl adipate. The following formulations using the latter oligoesterdiol (Mn 329), hardener, a phenolic ester alcohol as described in Example I (PHEA), the isocyanate Desmodur N3300 and melamine-formaldehyde resin, Cymel 300 w...

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Abstract

The present invention is directed to a polymeric vehicle, a formulated coating composition and a coating binder made from the polymeric vehicle and a method for making the polymeric vehicle where the polymeric vehicle includes a polyol, an isocyanate compound and a phenolic ester alcohol having at least one aliphatic hydroxyl group and at least one phenolic hydroxyl group.

Description

The present invention relates to polymeric vehicles for coating films or binders where the polymeric vehicles are thermosetting and include at least one phenolic ester alcohol, at least one polyol and at least one isocyanate compound with multi-isocyanate functionality. In an important aspect, the invention is directed to polymeric vehicles which include at least one phenolic ester alcohol, at least one isocyanate compound with multi-isocyanate functionality, at least one polyol and at least one amino resin.BACKGROUND OF THE INVENTION AND DESCRIPTION OF THE PRIOR ARTOne of the primary components in paint is the "film former" that provides a film for the protective function of a substrate coated with paint. Film forming components of liquid paints include resins which have required organic solvents to provide the resins with suitable viscosities such that the paint can be applied by existing commercial application equipment. Use of solvents, however, raises at least two problems. Fir...

Claims

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Application Information

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IPC IPC(8): C08G18/00C08G18/65C08G18/32C08G18/66C09D175/04C08G18/72C08G18/80C09D201/02C09D201/06C09D161/32
CPCC08G18/3215C08G18/3221C08G18/6511C08G18/664C08G18/728C08G18/8067C09D175/04C09D201/06C08L2666/16C08L2666/28C08K5/134
Inventor SWARUP, VIJAYJONES, FRANK N.YEZRIELEV, ALBERT I.SUBRAYAN, RAMACHANDRAN P.
Owner EXXON CHEM PAT INC
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